单阳极磁控注入电子枪的设计

 该单阳极磁控注入电子枪是为8mm永磁包装回旋振荡管设计的。首先利用绝热理论和角动量守恒理论进行了初始的电极参数设计，其次讨论和选取数值计算方法，然后利用自编的程序进行数值计算和优化，同时讨论了空间电荷的影响和速度零散的改善，最终得到最佳的电极和电子注参数。该电子枪已经应用于制管实验中。

DESIGN OF A SINGLE ANODE MAGNETRONINJECTION ELECTRONIC GUN

The single anode magnetron injection gun which will be employed to 8mm gyrotron of the casing by the permanent magnet experiments is designed. Firstly, analytic equations based on adiabatic theory and angular momentum conservation are used to examine initial design parameters of the electrode shapes. Secondly, the method of the numerical calculation is discussed and selected. Thirdly, the Numerical calculation and optimization is carried out by use of an self-redact electron trajectory code, the space charge effects and the velocity spreads is discussed. Lastly, the optimal parameters with electrode shapes and electronic trajectory was obtained. The single anode magnetron injection gun was employed in the experiments of the gyrotron.